What is Z-day?
Noun (zee day): A term probably coined by Max Brooks which refers to the war between
Z-Day will catch mankind completely off guard, and the lack of preparation will lead to countless casualties.
The day when
Some people even have a z-day survival plan and treat it as seriosly as you would treat a survival plan for if there was nuclear war.
Matt : Hey Joe , do you have a plan for Z-Day ?
Joe : what's that ?
Matt : It's when the dead are gonna rise from the graves and become zombies , and there will be chaos and everyone will go crazy
Joe : okay ...I think you've allready gone crazy
any day that one takes to avoid daily responsibilities(usually a day of school)by faking some kind of illness.
"Man, i heard she's taken like 20 Z-days already this year"